WO2017138280A1

WO2017138280A1 - Power generation system, and elastic energy storage device for power generation system

Info

Publication number: WO2017138280A1
Application number: PCT/JP2017/000390
Authority: WO
Inventors: 西浦　信一
Original assignee: 西風技研株式会社
Priority date: 2016-02-12
Filing date: 2017-01-10
Publication date: 2017-08-17
Also published as: JP2017141756A; JP6074081B1

Abstract

A power generation system according to an embodiment is characterized in that renewable energy, such as wind power or wave power, is converted into elastic energy and stored, and thereafter a generator device is driven using energy released from the stored energy. Specifically, as a shaft 5B of a storage device 3 is rotated, gears 32A, 32b, a third shaft 31, a cam 30, gears 33A, 33B, and a second shaft 7 are rotated. Then, in accordance with a rotation angle of the cam 30, annular members 38 constituting an elastic body 34 repeat storing and releasing of elastic energy. The process allows even discontinuous and unstable renewable energy to be stored without loss, and released stably and continuously using a stable repulsive force of the elastic body 34. The invention makes it possible to obtain large power to stably drive the generator device even in an unstable and intermittent renewable energy environment.

Description

Power generation system and elastic energy storage device for power generation system

The present invention relates to a power generation system that generates power based on renewable energy and a storage device that stores elastic energy based on renewable energy, and in particular, fluid flow such as wind, seawater tidal waves, waves, and river flows that occur in nature. And other power generation systems that generate power using renewable energy, and preferably power generation systems that use renewable energy in an environment with low average renewable energy and difficult energy continuity, and their regeneration The present invention relates to an elastic energy storage device for a power generation system that temporarily stores energy as elastic energy and sends this elastic energy to a generator as energy suitable for power generation.

Generally, a power generation system using renewable energy is used in an environment where high energy can be obtained as continuously as possible. For example, in wind power generation, installation on the coast, offshore, mountain top, mountainside, etc. where strong wind can be expected is the mainstream. Further, the energy receiving mechanism (blade) is arranged at a height of several tens of meters. In wave power generation, there are very few practical examples. However, when the development has been attempted so far, installation offshore with high wave height is the mainstream. And most of these are large facilities.
It has been a long time since local production for local consumption of renewable energy was said. For this reason, it is expected to realize wind power generation in urban areas and wave power generation in bays, which are practical, medium-sized and small-sized consumer products. However, the current situation is limited to very subsidized ones, and no one with the ability as an alternative power generator has yet appeared. The biggest reason is the installation environment.

Taking wind power generation as an example, the annual average wind speed on the roof of a building in Tokyo is about 3m. There are many days without wind and energy continuity is poor. Among the wind power generators sold for consumer use, there is a product that claims a power generation capacity of 2000 kWh, which is based on the assumption of strong winds such as wind speeds of 15 m. There is no strong wind. When such a product is actually used in an environment with an annual average wind speed of 3 m (1/5 of the wind speed) as in Tokyo, the following various problems occur, and the generated power is 20 minutes of the wind speed. It drops to about 100kWh.

1. In a light wind, there is a problem of the threshold of the energy receiving unit that the blade does not rotate due to the mechanical load of the system, for example, the weight of the blade (wing), the torque of the motor shaft, and the like.
2. Even if the wind speed at which the blades (wings) turn is reached, there is a problem of the threshold value of the power generation system in that the electric power that can be used is not reached unless the rotation speed until the motor of the generator is generated is reached.
3. Even when the rotation speed at which power can be generated is reached, there is a problem of power generation efficiency in that the received energy is consumed due to the power loss due to the load in the system.
4). Batteries due to non-continuity of power generation, in which even if wind power rotates blades and sufficient power is generated and stored in a power storage device such as a battery, if there is no wind and power generation continues for a long time, the battery will spontaneously discharge in the battery The problem of the power storage performance of the power storage device occurs.

On the other hand, in the case of wave power generation using wave ups and downs (wave height) as an energy source, the average number of sea bays, etc. in the installation environment that is practically used for civilian use is compared to the annual average wave height of several meters offshore. There is no question that the wave height is 10 centimeters, and that if the wave height is read as wind speed, the same problem as wind power generation will occur.
To solve these problems, multipolar generator motors that can generate electricity at low speeds and battery chargers that use computer control of electric power have been proposed, but none of them are expensive and cost-effective. is the current situation. Under such circumstances, there has been a demand for a power generation system that can be used in consumer use, and can be used in a consumer environment that is small, medium, and has a poor renewable energy environment.

In Patent Document 1, external energy is accumulated by distorting an elastic body by an external force, and the external energy accumulated is output at a substantially constant power, and output from the mechanical energy accumulation unit. Disclosed is a mechanical energy storage type power generation device comprising a power generation means for converting external energy into electric power and a rectification means for rectifying the power converted by the power generation means, and a spring, a helical spring, a plate as an elastic body Examples are springs, rubber, shape memory alloys and the like.
In this invention, the external force for accumulating the mechanical energy in the accumulating means is human power. For example, when the rotary knob is picked and rotated, the mainspring is wound around the power input shaft, and the external energy is stored in the mainspring. It is described that it is done.

Patent Document 2 is a card-type generator that converts kinetic energy generated by being moved into electrical energy into mechanical energy conversion means that receives the kinetic energy and converts it into mechanical energy; A power generation mechanism comprising mechanical energy storage means for storing mechanical energy converted by the mechanical energy conversion means and power generation means for generating electric power driven by mechanical energy output from the mechanical energy storage means is a card type A card-type generator characterized in that it is built in a case formed in the above. An example of the mechanical energy storage means is an elastic body (for example, a spring) that is deformed by rotation of a rotary weight and stores the mechanical energy by the deformation. The kinetic energy to be used is kinetic energy generated by the walking of the wearer and the like, but indirectly, is human power.

Patent Document 3 discloses mechanical energy storage means for temporarily storing water kinetic energy (kinetic energy of water flowing in a water passage) as mechanical energy, and power generation means for converting the mechanical energy into electric energy. And a power supply device for supplying electrical energy to an automatic water discharge device configured to include an electrical storage device that stores electrical energy obtained by the power generation device, and as a mechanical energy storage device, Examples are elastic bodies such as rubber and springs. And the kinetic energy used is the kinetic energy of the water which flows in a water channel.

Patent Document 4 includes a rack bar having a longitudinal direction in one direction, a pinion that is rotated by relative movement with respect to the rack bar, and a power generation means that generates electric power using the rotational force of the pinion. When a kinetic force having a component is applied, the rack bar and the pinion perform relative movement along one direction, and the pinion is rotated by this relative movement. A generator that generates power by means of power generation by rotation of a pinion is disclosed. At least one of the rack bar and the pinion is provided with a reaction force applying means (elastic body) that applies a reaction force in the opposite direction to the relative movement direction of either one of the rack bar and the pinion. Examples are leaf springs, rubbers and the like.

JP 10-131841 A JP 2002-84726 A Japanese Patent Laid-Open No. 2003-278216 JP 2004-260896 JP

The present inventor has found that the above-mentioned problem of the conventional renewable energy power generation system is that the kinetic energy extracted from the renewable energy is directly connected to the generator, and the extraction of the renewable energy and the power generation are processed in the same time series. I found out that it is due to being. That is, when the extraction of renewable energy and power generation are processed in the same time series, the efficiency of power conversion is determined by the height of the renewable energy and the conversion efficiency of the generator motor, and the input of low renewable energy is a problem described above. There is a marked disadvantage as it is. In addition, since there is no countermeasure against energy continuity, natural discharge in a power storage device such as a battery cannot be avoided.

Therefore, the present inventor does not process the extraction of regenerative energy and power generation in the same time series, but temporarily stores regenerative energy as elastic energy before power generation, and generates power after accumulating a predetermined amount of this elastic energy. We have studied earnestly. As a result, a generator is installed in front of the generator to store the regenerative energy as elastic energy. By accumulating elastic energy, small elastic energy and intermittent elastic energy are converted into large continuous elastic energy, and the generator The low renewable energy, which is an obstacle to the realization of renewable energy for civilian use, such as wind power generation in urban areas and wave power generation at the bay, and the generation of intermittent energy I found that the problem could be overcome.

That is, the present invention has been made in view of the above circumstances, and does not process the extraction of the regenerative energy and the power generation in the same time series, and temporarily stores the regenerative energy as elastic energy before the power generation. It is applied to this power generation system and a power generation system that can be used for consumer use by generating electricity after a predetermined amount of (elastic energy) is accumulated for power generation, and that can be used in a consumer environment that is small, medium-sized, and has a poor renewable energy environment. An elastic energy storage device is provided.

However, in the methods of Cited Documents 1 to 4, there is a limit to the magnitude of energy storage.

The present invention has been made to solve the above-described problems, and has the following configuration.
The first aspect of the invention is to store elastic energy using the input first power, and to use the stored elastic energy to generate a second power larger than the first power, and to store the second power as electric power. A power generation device for conversion, and the storage device includes an elastic body that includes a ring-shaped member that is elastically deformable in a radial direction, and elastically deforms the elastic body by the first power. The power generation system stores elastic energy and converts elastic energy into the second power when the elastic body is released from elastic deformation.

In the second aspect of the present invention, the storage device includes a rail, a plurality of the annular bodies arranged so that outer peripheral surfaces thereof are in contact with each other along the rail, and a slider for slidably attaching the annular bodies to the rail. A stopper that contacts the annular body at one end of each of the annular bodies, and compresses each annular body toward the stopper by the first power or moves away from the stopper. The power generation system according to claim 1, wherein each of the annular bodies is elastically deformed by being stretched to the right.

A third aspect of the present invention further includes a receiving device that receives energy and generates the first power, a first shaft that connects the receiving device and the storage device, and a first shaft that connects the storage device and the power generation device. Two shafts, wherein the first power is transmitted to the storage device by the rotational motion of the first shaft, and the second power is transmitted to the power generation device by the rotational motion of the second shaft. The power generation system according to

claim

1 or 2.

The invention 4 is a receiving device that receives energy and generates first power, stores elastic energy using the first power, and generates second power that is larger than the first power using the stored elastic energy. An accumulating device that generates power, a power generating device that converts the second power into electric power, and the receiving device and the accumulating device are connected, and the first power generated by the receiving device is transmitted to the accumulating device by rotational movement. A first shaft that connects the storage device and the power generation device, a second shaft that transmits the second power generated by the storage device to the power generation device by a rotational motion, and the first shaft. A transmission that changes the rotational speed of the first shaft, and the storage device includes an elastic body, and elastically deforms the elastic body by the first power to generate elastic energy. When the elastic deformation of the elastic body is released, elastic energy is converted into the second power, and the torque of the first shaft after the shift by the transmission is the second shaft necessary for power generation by the power generation device. It is a power generation system that is smaller than the torque.

According to a fifth aspect of the present invention, the storage device includes a third shaft, a cam that rotates about the third shaft, a first gear train that transmits the rotational motion of the first shaft to the third shaft, and the third shaft. A second gear train that transmits the rotational motion of the shaft to the second shaft, and the cam is caused by the rotational motion of the first shaft, the first gear train, and the third shaft by the first power. The elastic body is elastically deformed, and the second power for rotating the second shaft is generated by the rotational movement of the cam, the third shaft, and the second gear train accompanying the cancellation of the elastic deformation of the elastic body. The power generation system according to claim 4.

According to a sixth aspect of the present invention, the storage device includes a rack connected to the elastic body, a first gear connected to the first shaft, and a second gear connected to the second shaft, and meshed with the rack. A gear train, wherein the first gear is rotated by the first power to move the rack in the first direction, the elastic body is elastically deformed, and the rack is released when the elastic deformation of the elastic body is released. The power generation system according to claim 4, wherein the second power is generated by rotating the second gear while moving in a second direction opposite to the first direction.

According to a seventh aspect of the present invention, the storage device further includes a switching mechanism that switches between a first state in which elastic deformation of the elastic body by the first power is allowed and a second state in which elastic deformation of the elastic body is released. It is an electric power generation system in any one of invention 1 thru | or 6.

Invention 8 stores the elastic energy using the input first power, generates the second power larger than the first power using the stored elastic energy, and converts the second power into electric power. An elastic energy storage device for a power generation system that is connected to a device so as to be capable of transmitting power, comprising an elastic body that includes a ring-shaped member and is elastically deformable in a radial direction. An elastic energy storage device for a power generation system that stores elastic energy by elastically deforming an elastic body and converts the elastic energy into the second power when releasing the elastic deformation of the elastic body.

The invention 9 includes a rail, a plurality of the annular bodies arranged with their outer peripheral surfaces in contact with each other along the rail, a slider for slidably attaching the annular bodies to the rail, and the annular bodies. A stopper that contacts the ring body at one end, and compresses each ring body toward the stopper by the first power, or extends in a direction away from the stopper. The elastic energy storage device for a power generation system according to claim 8, wherein each of the annular bodies is elastically deformed.

According to a tenth aspect of the present invention, each of the first shaft that transmits the first power from the receiving device that receives the energy and generates the first power, and the second shaft that transmits the second power to the power generator It is the elastic energy storage device for power generation systems of the invention 8 or 9 connected.

Invention 11 is the elastic energy storage device for a power generation system according to Invention 10, wherein the torque of the first shaft is smaller than the torque of the second shaft required for power generation by the power generation device.

The invention 12 includes a rack connected to the elastic body, a gear train including a first gear connected to the first shaft and a second gear connected to the second shaft, and meshed with the rack. Further, the first gear is rotated by the first power to move the rack in the first direction, and the elastic body is elastically deformed. When the elastic body is released from elastic deformation, the rack is moved to the first direction. The elastic energy storage device for a power generation system according to claim 10 or 11, wherein the second power is generated by rotating the second gear while moving in a second direction opposite to the first direction.

In the invention 13, the elastic energy is stored using the input first power, the second power larger than the first power is generated using the stored elastic energy, and the second power is converted into electric power. An elastic energy storage device for a power generation system connected to the device so as to be capable of transmitting power, the first shaft transmitting the first power from the receiving device that receives the energy and generates the first power; and Each of the second shafts that transmit the second power to the power generation device is connected, and an elastic body, a third shaft, a cam that rotates around the third shaft, and a rotational motion of the first shaft. A first gear train for transmitting to the third shaft; and a second gear train for transmitting rotational motion of the third shaft to the second shaft, wherein the first shaft is driven by the first power. The cam causes the elastic body to be elastically deformed by the rotational movement of the first gear train and the third shaft, and the cam, the third shaft, and the second gear train are accompanied by the cancellation of the elastic deformation of the elastic body. This is an elastic energy storage device for a power generation system in which the second power for rotating the second shaft is generated by the rotational movement of the power generation system.

The invention 14 further includes a switching mechanism that switches between a first state in which elastic deformation of the elastic body by the first power is allowed and a second state in which elastic deformation of the elastic body is released. An elastic energy storage device for a power generation system according to any one of the above.

According to the present invention, it is possible to provide a small-sized, medium-sized power generation system that can be used for consumer use and that can be used in a consumer environment with a poor renewable energy environment, and an elastic energy storage device applied to this power generation system.

FIG. 1 is a diagram illustrating a schematic configuration of a power generation system according to the first embodiment. FIG. 2 is a diagram illustrating a configuration example of the storage device 3. FIG. 3 is a diagram illustrating a configuration example of the storage device 3. FIG. 4 is a diagram showing a storage device during elastic energy storage. FIG. 5 is a diagram showing a storage device having the maximum elastic energy storage amount. FIG. 6 is a diagram illustrating the storage device when using elastic energy. FIG. 7 is a diagram illustrating a schematic configuration of a power generation system according to the second embodiment. FIG. 8 is a diagram illustrating a schematic configuration of a power generation system according to the third embodiment. FIG. 9 is a diagram illustrating a schematic configuration of a power generation system according to the fourth embodiment. FIG. 10 is a diagram illustrating a schematic configuration of a storage device according to the fifth embodiment. FIG. 11 is a diagram showing a storage device during elastic energy storage. FIG. 12 is a diagram illustrating a storage device in which the elastic energy storage amount is maximized. FIG. 13 is a diagram showing a storage device when using elastic energy.

Several embodiments will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram illustrating a schematic configuration of a power generation system 1 according to the first embodiment. The power generation system 1 includes a renewable energy receiving device 2 (hereinafter referred to as a receiving device 2), a storage device 3, and a power generating device 4.
The receiving device 2 receives the regenerative energy and generates first power. As the regenerative energy, for example, wave energy, which is a force that moves the water surface up and down, such as wind power and the sea, and various energy generated by fluid flow such as water discharge from a dam or water through which water flows in a river can be used. Further, as regenerative energy, tidal power that is the power of tide filling, steam generated by using geothermal heat, or the like may be used. Renewable energy is sometimes called renewable energy. These regenerative energy receiving devices themselves are known to those skilled in the art, for example, from Japanese Unexamined Patent Application Publication Nos. 2015-17614 and 2015-17622. Of course, the regenerative energy receiving apparatus of the present invention is not limited to the apparatus described in Japanese Patent Application Laid-Open No. 2015-17614 or 2015-17622.

The receiving device 2 and the storage device 3 are connected by a first shaft 5. In the example of FIG. 1, the first power generated by the receiving device 2 is transmitted to the storage device 3 via the first shaft 5.
Although details will be described later in the second to fourth embodiments, various mechanisms may be employed as the mechanism that the receiving device 2 receives the regeneration energy and generates the first power. For example, when the regenerative energy is wind power, the receiving device 2 includes a blade that rotates by receiving the wind power, and a power generation mechanism that rotates the first shaft 5 as the blade rotates. When the regenerative energy is wave power, the receiving device 2 includes a floating body that moves up and down together with the water surface, and a power generation mechanism that rotates the first shaft 5 as the floating body moves up and down. In addition, when the regenerative energy is hydraulic, the receiving device 2 includes a turbine that rotates by receiving hydraulic power, and a power generation mechanism that rotates the first shaft 5 as the turbine rotates.
The configuration of the power generation mechanism is not particularly limited. For example, in the case of wind power or hydraulic power, a gear train that transmits the rotational motion of blades and turbines to the first shaft 5 may be included. In the case of wave power, a rack that reciprocates as the floating body moves up and down, and a gear train that meshes with the rack and rotates as the rack reciprocates to rotate the first shaft 5 can be included.

Rotational motion of the blade or turbine and vertical motion of the floating body may be converted into rotational motion of the first shaft 5 after being converted into reciprocating motion of the cable. As the cable, for example, a structure including a hollow outer cable and an inner cable passed through the outer cable, and the inner cable reciprocatingly moves inside the outer cable can be adopted. Even if the mechanism that converts the reciprocating motion of the inner cable into the rotational motion is installed at a position away from the installation position of the blade, turbine, or floating body by giving flexibility to the outer cable and the inner cable, Both can be easily connected.

In the example of FIG. 1, a transmission 6 is interposed between the receiving device 2 and the storage device 3. Further, the first shaft 5 includes a shaft 5 A that connects the receiving device 2 and the transmission 6, and a shaft 5 B that connects the transmission 6 and the storage device 3. In this configuration, the shaft 5 A is rotated by the first power of the receiving device 2. The transmission 6 shifts (increases or decreases) the rotational speed of the shaft 5A, and rotates the shaft 5B at the rotational speed after the shift. The speed increasing ratio or the speed reducing ratio of the transmission 6 may be appropriately determined in consideration of the rotational speed and torque obtained by the receiving device 2 and the rotational speed and torque necessary for the storage device 3.

The storage device 3 and the power generation device 4 are connected by a second shaft 7. As will be described in detail later, the storage device 3 stores elastic energy using the first power transmitted via the first shaft 5 and generates second power using the stored elastic energy. The second power is transmitted to the power generation device 4 as the rotational motion of the second shaft 7.
The power generation device 4 converts the second power into electric power. Various specific configurations of the power generation device 4 can be employed. As an example, the power generation device 4 illustrated in FIG. 1 includes a speed governor 41, a power generation unit 42, a power storage unit 43, and a power transmission unit 44.

The second shaft 7 is connected to the speed governor 41 and the power generation unit 42. The governor 41 adjusts the rotation speed of the second shaft 7 within a speed range suitable for power generation. For example, a centrifugal governor can be used as the governor 41. The power generation unit 42 generates electric power based on the rotational motion of the second shaft 7. Various known configurations can be adopted as the configuration of the power generation unit 42. The power storage unit 43 includes a battery that stores power generated by the power generation unit 42. The power transmission unit 44 supplies the power stored in the power storage unit 43 to the power transmission line with a predetermined voltage and current. The power transmission line may be a part of an existing power transmission network, or may be specially provided for use in a specific building such as a factory, a building, or a house.

The storage device 3 includes an elastic body, and stores elastic energy corresponding to the elastic coefficient and deformation amount of the elastic body by elastically deforming the elastic body using the first power. Furthermore, the storage device 3 generates second power using elastic energy stored in the elastic body when the elastic body cancels elastic deformation. As described above, the storage device 3 stores and uses elastic energy by elastic deformation of the elastic body and its elimination. The structure of the storage device 3 is not particularly limited as long as it exhibits such a function.

In the present embodiment, the second power is larger than the first power. Further, the second power exceeds at least the load of the power generation device 4. Here, the power is, for example, a work amount per unit time, and can be defined as a value proportional to the product of the torque and the rotational speed in terms of the rotating body.

Note that the first power is generated based on unstable regenerative energy, and fluctuates according to the magnitude of the regenerative energy. Therefore, the first power may be temporarily larger than the second power. In the present embodiment, the phrase “the second power is greater than the first power” does not exclude the case where the first power temporarily exceeds the second power in this way. It is intended that the average value is smaller than the second power.

2 and 3 are diagrams showing an example of the configuration of the storage device 3. The storage device 3 in this example includes a cam 30, a third shaft 31, a first gear train 32, and a second gear train 33, as shown in FIG. Furthermore, as shown in FIG. 3, the storage device 3 includes an elastic body 34, a rail 35, a stopper 36, and a slider 37.
The first gear train 32 transmits the rotational motion of the first shaft 5 (shaft 5 B) to the third shaft 31. The second gear train 33 transmits the rotational motion of the third shaft 31 to the second shaft 7.
In the example of FIG. 2, the first gear train 32 includes

gears

32A and 32B (first gears) meshing with each other. The gear 32A is attached to the first shaft 5 (shaft 5B) and rotates about the shaft 5B. The gear 32B is attached to the third shaft 31, and rotates around the third shaft 31. The gear 32A has a smaller diameter than the gear 32B. The gear 32A has, for example, a unidirectional clutch mechanism. When the shaft 5B rotates in a certain direction by the first power, this rotation is transmitted to the gear 32B, but when the shaft 5B rotates in the other direction. Idle.

On the other hand, the second gear train 33 includes

gears

33A and 33B (second gears) meshed with each other. The gear 33A is attached to the second shaft 7 and rotates about the second shaft 7 as an axis. The gear 33 B is attached to the third shaft 31 and rotates about the third shaft 31. The gear 33A has a smaller diameter than the gear 33B.
The cam 30 is attached to the third shaft 31 and rotates around the third shaft 31. For example, the cam 30 is a disc cam in which the distance between the circumferential surface that is a curved surface and the third shaft 31 changes according to the rotation angle.

The elastic body 34 includes an annular body 38 formed of, for example, a band-shaped member. The ring body 38 is elastically deformable in the radial direction. The ring body 38 can be formed of, for example, a metal material such as spring steel or rubber. In the example of FIG. 3, the elastic body 34 includes five ring bodies 38. However, the number of ring bodies 38 included in the elastic body 34 may be four or less, or may be six or more. The annular body 38 is, for example, a perfect circle in a natural state where it is not elastically deformed. However, the ring body 38 may have another shape such as an elliptical shape or a polygonal shape in a natural state. Note that the specific material, thickness, circumferential width, diameter, and the like of the ring body 38 can be determined as appropriate in consideration of required elastic force, installation space, manufacturing cost, and the like.

The elastic body 34 may include, for example, a U-shaped member, a V-shaped member, or an annular member in which two U-shaped members are coupled instead of the ring body 38. These members can be formed of a metal material such as steel, like the ring body 38.
Each ring 38 is attached to the rail 35 via a slider 37. The slider 37 is slidable along the rail 35. Each ring 38 is arranged in a straight line along the rail 35. The outer peripheral surfaces of the adjacent ring bodies 38 are in contact with each other. For example, by disposing a roller or a ball at the contact portion between the rail 35 and the slider 37, loss due to friction can be reduced. Such a roller or ball may be provided on either the rail 35 or the slider 37.

The outer peripheral surface of the cam 30 is in contact with the outer peripheral surface of the ring body 38 at the left end in FIG. The outer peripheral surface of the ring body 38 at the right end in FIG. 3 is in contact with the stopper 36. The positional relationship among the stopper 36, the rail 35, and the third shaft 31 is fixed and does not change with the rotation of the cam 30.
Next, the operation of the storage device 3 will be described with reference to FIGS.
When the shaft 5B is rotated by the first power, the

gears

32A and 32B, the third shaft 31, the cam 30, the

gears

33A and 33B, and the second shaft 7 are rotated. At this time, each ring 38 repeats elastic deformation (accumulation of elastic energy) and cancellation (utilization of elastic energy) according to the rotation angle of the cam 30.

FIG. 4 shows a state when elastic energy is accumulated. In a period in which the distance between the position where the outer peripheral surface of the cam 30 contacts the ring body 38 and the third shaft 31 increases, the cam 30 pushes each ring body 38 toward the stopper 36. As a result, each ring 38 is elastically deformed in the direction indicated by the arrow in the figure, and elastic energy is stored.
During elastic energy accumulation, the force with which the elastic body 34 pushes the cam 30 includes the load on the shaft 5B (the load on the receiving device 2 and the transmission 6) and the load on the second shaft 7 (the load on the power generation device 4). Less than the sum of Therefore, the cam 30 does not reversely rotate. Alternatively, a separate mechanism may be provided in the storage device 3 so that the cam 30 does not reversely rotate during elastic energy storage.
Eventually, as shown in FIG. 5, when the distance between the position where the outer peripheral surface of the cam 30 contacts the ring body 38 and the third shaft 31 reaches the maximum distance, the accumulated amount of elastic energy becomes maximum.

FIG. 6 shows a state when using elastic energy. In a period in which the distance between the position where the outer peripheral surface of the cam 30 contacts the ring body 38 and the third shaft 31 decreases, the elastic deformation of each ring body 38 is eliminated. It is pushed in the direction indicated by. That is, the elastic energy stored in the elastic body 34 is used.
At this time, the cam 30 rotates by the force pushed by the elastic body 34 in addition to the rotation by the first power. The power generated with the rotation of the cam 30 corresponds to the second power described above. The second power is transmitted to the power generation device 4 via the second shaft 7 and the power generation device 4 generates power. Thereafter, when the distance between the position where the outer peripheral surface of the cam 30 contacts the ring body 38 and the third shaft 31 reaches the minimum distance, accumulation of elastic energy is started again.

Note that the second shaft 7 also rotates during elastic energy accumulation, but the power generation device 4 does not generate power because the rotational speed and torque are small. Or even if it generates electric power, only very small electric power is generated. In general, the larger the generated power, the greater the load on the power generator. Therefore, the load of the power generation device 4 at the time of elastic energy accumulation is extremely small.

From another viewpoint, the gear ratio of the transmission 6 is determined so that the elastic body 34 is elastically deformed and the power generation device 4 does not generate power when elastic energy is accumulated.
That is, the torque N1 for rotating the shaft 5B is smaller than the torque N2 required for power generation by the power generation device 4 (N1 <N2). Alternatively, the first power W1 transmitted through the shaft 5B is smaller than the third power W3 required for power generation by the power generation device 4, and is equivalent to the fourth power W4 required for elastic energy storage by the storage device 3. Or more (W4 ≦ W1 <W3). The second power W2 generated in the storage device 3 when using elastic energy is equal to or greater than the third power W3 (W3 ≦ W2).

As described above, the power generation system 1 according to this embodiment repeats accumulation and use of elastic energy. The first power obtained from the renewable energy is unstable, and a value suitable for power generation cannot always be obtained, and sometimes it stops. In the conventional power generation system, when the power from the receiving device is less than the load of the power generation device, the power generation device does not operate and power may not be obtained. In this case, the power generated by the receiving device is wasted.
In contrast, in the power generation system 1 according to the present embodiment, even when the first power generated by the receiving device 2 is small, the first power can be effectively utilized to generate power. That is, the first power from the receiving device 2 is temporarily stored as elastic energy in the storage device 3. When the elastic energy is sufficiently stored, the storage device 3 uses the elastic energy to generate the second power that exceeds the load of the power generation device 4. This second power is extremely stable because it corresponds to energy when the elastic body 34 releases elastic deformation.
In addition, the various effects described above can be obtained from this embodiment.

(Second Embodiment)
A second embodiment will be described. In the present embodiment, a specific example of the receiving device 2 in the first embodiment is disclosed. Elements that are the same as or similar to those in the first embodiment are denoted by the same reference numerals, and differences from the first embodiment will be mainly described.

FIG. 7 is a diagram illustrating a main configuration of the power generation system 1 according to the second embodiment. Here, a configuration in which the receiving device 2 in the first embodiment receives the wave force and generates the first power is illustrated. The receiving device 2 includes a floating body 20, a rack 21, and a gear 22.
The floating body 20 is floated on a water surface WF such as a sea or a lake. The floating body 20 moves up and down according to a change in the position of the water surface WF due to waves. The rack 21 is fixed to the floating body 20. The rack 21 has a blade row 21 a arranged in a straight line in the vertical movement direction of the floating body 20. The gear 22 meshes with the rack row 21a. The gear 22 is rotatable about the shaft 5A.

As the floating body 20 moves up and down, the rack 21 moves up and down. The gear 22 includes, for example, a one-way clutch mechanism, and transmits the rotation when the rack 22 is raised to the shaft 5A and does not transmit the rotation when the rack 22 is lowered to the shaft 5A. In this case, the rotational motion of the shaft 5A when the rack 22 is raised corresponds to the first power. On the contrary, the gear 22 may transmit the rotation when the rack 22 is lowered to the shaft 5A. In this case, the rotational motion of the shaft 5A when the rack 22 is lowered corresponds to the first power. As yet another example, by using a plurality of gears, rotation when the rack 22 is raised and lowered may be transmitted to the shaft 5A. In this case, the rotational motion of the shaft 5A both when the rack 22 is raised and lowered corresponds to the first power.
FIG. 7 shows an example in which the floating body 20 and the rack 21 are fixed. However, the floating body and the rack 21 may be connected by the inner cable and the outer cable described above. In this case, the freedom degree of installation positions, such as the floating body 20 and the storage device 3, increases.

(Third embodiment)
A third embodiment will be described. In the present embodiment, another specific example of the receiving device 2 in the first embodiment is disclosed. Elements that are the same as or similar to those in the first embodiment are denoted by the same reference numerals, and differences from the first embodiment will be mainly described.
FIG. 8 is a diagram illustrating a main configuration of the power generation system 1 according to the third embodiment. Here, the configuration in which the receiving device 2 in the first embodiment receives the wind force to generate the first power is illustrated. The receiving device 2 includes a blade 23. The storage device 3, the power generation device 4, and the transmission 6 are accommodated in a nacelle 101 supported at a high place by a support column 100. A part of the power generation device 4, for example, the power storage unit 43 and the power transmission unit 44 may be provided outside the nacelle 101. In the example of FIG. 8, each ring body 38 and the stopper of the elastic body 34 are arranged in the vertical direction (the direction of gravity, the extending direction of the column 100).

The blade 23 is rotatable about the shaft 5A. In this configuration, the shaft 5A rotates when the blade 23 rotates by receiving wind. This rotational movement of the shaft 5A corresponds to the first power.
FIG. 8 shows an example in which the rotational motion of the blade 23 is directly transmitted to the shaft 5A. However, the inner cable and the outer cable described above may be interposed between the blade 23 and the shaft 5A. In this case, for example, a mechanism for converting the rotational motion of the blade 23 into the reciprocating motion of the inner cable and a mechanism for converting the reciprocating motion of the inner cable into the rotational motion of the shaft 5A are provided. With such a configuration, the storage device 3 and the power generation device 4 can be arranged outside the nacelle 101.

(Fourth embodiment)
A fourth embodiment will be described. In the present embodiment, still another specific example of the receiving device 2 in the first embodiment is disclosed. Elements that are the same as or similar to those in the first embodiment are denoted by the same reference numerals, and differences from the first embodiment will be mainly described.

FIG. 9 is a diagram illustrating a main configuration of the power generation system 1 according to the fourth embodiment. Here, a configuration in which the receiving device 2 in the first embodiment receives the hydraulic power of water flowing in a river or the like to generate the first power is illustrated. The receiving device 2 includes a turbine 24 whose lower part is immersed in running water R flowing in a river or the like. The turbine 24 receives the force of the flowing water R and rotates about the shaft 5A. This rotational movement of the shaft 5A corresponds to the first power.

FIG. 9 shows an example in which the rotational motion of the turbine 24 is directly transmitted to the shaft 5A. However, the inner cable and the outer cable described above may be interposed between the turbine 24 and the shaft 5A. In this case, for example, a mechanism for converting the rotational motion of the turbine 24 into the reciprocating motion of the inner cable and a mechanism for converting the reciprocating motion of the inner cable into the rotational motion of the shaft 5A are provided. With such a configuration, the degree of freedom of the installation positions of the turbine 24 and the storage device 3 is increased.

(Fifth embodiment)
A fifth embodiment will be described. In the present embodiment, another example of the storage device 3 is disclosed. Elements that are the same as or similar to those in the first embodiment are denoted by the same reference numerals, and differences from the first embodiment will be mainly described.

FIG. 10 is a diagram showing a schematic configuration of the storage device 3 according to the fifth embodiment. The storage device 3 includes a gear 130 (first gear), a gear 131 (second gear), a gear 132 (third gear), a rack 133, a movable member 134, a sensor 135, a control device 136, It has. Further, the storage device 3 includes a rail 35, a stopper 36, an elastic body 34, and a slider 37, as in the first embodiment. In the example of FIG. 10, the elastic body 34 includes three ring bodies 38. However, the number and shape of the ring 38 are not particularly limited.

The gear 130 can rotate around the shaft 5B. The gear 131 can rotate around the second shaft 7. The gear 132 can rotate around the shaft 137.
The rack 133 has a blade row 133a arranged in a straight line. The movable member 134 is connected to one end of the rack 133. Furthermore, the movable member 134 is in contact with the outer peripheral surface of the ring body 38 disposed at the left end in the drawing.
The gear 132 meshes with the gear 130, the gear 131, and the blade row 133a. As the gear 132 rotates, the rack 133 and the movable member 134 reciprocate in a direction approaching the stopper 36 and a direction away from the stopper 36.

In the present embodiment, the gear 130 has a bi-directional first clutch mechanism CL1 capable of switching between the driving direction and the idling direction. The first clutch mechanism CL1 switches the driving direction and the idling direction by electromagnetic control, for example, and is controlled by the control device 136.
For example, the sensor 135 detects that the rack 133 or the movable member 134 has reached the first reference position and the second reference position. The first reference position is, for example, a position where the marker M1 attached to the rack 133 and the sensor 135 face each other. The second reference position is, for example, a position where the marker M2 attached to the rack 133 and the sensor 135 face each other. The sensor 135 outputs a detection signal when detecting the markers M1 and M2. For example, the sensor 135 is an optical sensor that optically detects the markers M1 and M2. The sensor 135 may be another type of sensor such as a magnetic sensor that magnetically detects the markers M1 and M2.

The control device 136 controls the first clutch mechanism CL1 based on the detection signal of the sensor 135. That is, the gear 130 functions as a two-way clutch gear. In the first clutch mechanism CL1, the driving direction is the rotation direction of the gear 130 that transmits power between the shaft 5B and the gear 132, and the idling direction is the rotation direction of the gear 130 that does not transmit power between the shaft 5B and the gear 132. It is.
In the present embodiment, the gear 131 has a unidirectional second clutch mechanism CL2 that has a driving direction and an idling direction but cannot switch between them. That is, the gear 131 functions as a one-way clutch gear. However, a bi-directional clutch mechanism may be used as the second clutch mechanism CL2. In the second clutch mechanism CL2, the driving direction is the rotation direction of the gear 131 that transmits power between the second shaft 7 and the gear 132, and the idling direction is a gear that does not transmit power between the second shaft 7 and the gear 132. 131 is the direction of rotation.
The first clutch mechanism CL1 and the second clutch mechanism CL2 constitute a switching mechanism 140. The switching mechanism 140 switches between a first state that allows elastic deformation of the elastic body 34 and a second state that releases elastic deformation of the elastic body 34.

In FIG. 10, an arrow indicated by a solid line indicates the rotation direction of each gear when elastic energy is accumulated. On the other hand, the arrow shown with a broken line shows the rotation direction of each gear at the time of elastic energy utilization.
The shaft 5B rotates in the same direction both when elastic energy is accumulated and when it is used. At the time of accumulating elastic energy, the driving direction and idling direction of the first clutch mechanism CL1 are set so that the gear 130 rotates in the direction of the solid arrow in response to the rotation of the shaft 5B. In response to the rotation of the gear 130, the gear 132, the gear 131, and the gear 131 rotate in the direction indicated by the solid arrow. At this time, the drive direction and the rotation direction of the second clutch mechanism CL2 are set so that the gear 131 does not rotate and the second shaft 7 does not rotate. As the gear 132 rotates, the rack 133 and the movable member 134 move toward the stopper 36. Further, each ring 38 is elastically deformed by being pushed by the movable member 134.

When elastic energy is used, the elastic member 34 pushes the movable member 134 and the rack 133 away from the stopper 36, thereby rotating the gear 132 in the direction indicated by the dashed arrow. In response to the rotation of the gear 132, the gear 130 and the gear 131 rotate in the direction indicated by the broken line arrow.
When the elastic energy is used, the drive direction of the first clutch mechanism CL1 and the idling direction are reversed by the control of the control device 136. Therefore, since the gear 130 idles, the rotation of the gear 130 is not transmitted to the shaft 5B. On the other hand, since the rotation of the gear 131 coincides with the driving direction of the second clutch mechanism CL2, the second shaft 7 is rotated by the rotation of the gear 131. In response to the rotation (second power) of the second shaft 7, the power generation device 4 can generate power.
It should be noted that it is necessary to prevent the elastic deformation of the elastic body 34 from being released during elastic energy accumulation. In this embodiment, release of elastic deformation of the elastic body 34 is prevented by using the load of the shaft 5B (the load of the receiving device 2 and the transmission 6) and the load of the second shaft 7 (the load of the power generation device 4). It is out. That is, even when the elastic body 34 tries to push the movable member 134 and the rack 133 away from the stopper 36 during the accumulation of elastic energy, the rotational directions of the gear 130 and the gear 131 at this time coincide with the driving direction. Therefore, the load of the shaft 5B and the second shaft 7 acts simultaneously, and the movable member 134 and the rack 133 are prevented from moving.
In this example, the load of the shaft 5B and the second shaft 7 is used to prevent release of elastic deformation of the elastic body 34. However, by providing a separate mechanism, release of elastic deformation during energy storage is prevented. But it ’s okay.

Next, the operation of the storage device 3 will be described with reference to FIGS.
At the time of elastic energy storage, the storage device 3 is set to the first state described above. At this time, as shown in FIG. 11, the

gears

130 and 132 are rotated by the first power transmitted via the shaft 5 B, and the rack 133 and the movable member 134 move toward the stopper 36. Accordingly, each ring 38 is elastically deformed, and elastic energy corresponding to the elastic deformation is accumulated in the accumulation device 3.

Eventually, as shown in FIG. 12, when the sensor 135 faces the marker M1, the sensor 135 outputs a detection signal. Upon receiving the detection signal from the sensor 135, the control device 136 controls the switching mechanism 140 (mainly the first clutch mechanism CL1) and switches the storage device 3 to the second state described above.
When switched to the second state, as shown in FIG. 13, the movable member 134 and the rack 133 are pushed by releasing the elastic deformation of the elastic body 34, and the movable member 134 and the rack 133 move away from the stopper 36. In response to the rotation of the gear 132 at this time, the gear 131 rotates, and further, the rotation of the gear 131 is transmitted to the second shaft 7 and the second shaft 7 rotates. In response to the rotational movement of the second shaft 7, that is, the second power, the power generation device 4 generates electric power.

Thereafter, as shown in FIG. 10, when the sensor 135 faces the marker M2, the sensor 135 outputs a detection signal. Upon receiving the detection signal from the sensor 135, the control device 136 controls the switching mechanism 140 (mainly the first clutch mechanism CL1), and switches the storage device 3 to the first state described above. Thereby, the storage device 3 again stores elastic energy using the first power.

As described above, also in the power generation system 1 according to the present embodiment, accumulation and use of elastic energy are repeated. The configuration of the storage device 3 disclosed in this embodiment can be applied to any of the second to fourth embodiments.

The present invention can be implemented by adding various modifications to the configurations of the embodiments described above. For example, the configurations disclosed in the embodiments may be combined as appropriate. The forms modified without departing from the gist of the invention are included in the invention described in the claims and the equivalents thereof.
For example, in each embodiment, the storage device 3 disclosed the example which stores elastic energy by compressing the elastic body 34. However, the storage device 3 may store elastic energy by expanding the elastic body 34 or may store it by continuously compressing and expanding.

The storage device 3 may include a mechanism for transmitting the first power from the receiving device 2 to the power generation device 4 as it is, and the mechanism and a mechanism for storing elastic energy may be switched. In this case, for example, when the regenerative energy is sufficiently strong such as when a strong wind is blowing, power can be generated using the first power.
In the fifth embodiment, the control method in which the control device 136 switches between the first state and the second state is not limited to the above. For example, after the sensor 135 detects the marker M1 and is switched to the second state, it may be switched to the first state when a certain time has elapsed. In this case, it is not necessary to detect the marker M2. Further, after the sensor 135 detects the marker M2 and is switched to the first state, the sensor 135 may be switched to the second state when a certain time has elapsed. In this case, it is not necessary to detect the marker M1. Moreover, you may switch a 1st state and a 2nd state for every fixed time. In this case, the sensor 136 is not necessary. Further, the number of rotations of the gear 132 or the like may be counted, and the first state and the second state may be switched according to the count value. In addition, various control methods can be adopted.
The method of elastically deforming the elastic body 34 in the storage device 3 is not limited to that using the cam 30 or the rack 133. For example, a ball screw mechanism including a screw that rotates as the shaft 5B rotates and a nut that is screwed into the screw via a ball can be used. That is, in this ball screw mechanism, the elastic body 34 can be elastically deformed if the elastic body 34 is compressed or stretched as the nut moves.

According to the present invention, among the many problems that power generation systems using conventional renewable energy have, at least the problem of the threshold value for starting the energy receiving unit, the problem of the threshold value of the power generation system, the problem of power generation efficiency, The problem of the power storage performance of a power storage device such as a battery due to the discontinuity of the battery can be solved. That is,
(Solving the problem of the threshold for starting energy reception)
Conventional wind power generators have a torque that does not lose the kinetic energy to the load on the generator side, so the blades need to be sturdy and tend to be heavy. This increases the threshold of wind power until the blades begin to rotate.
In the present invention, the kinetic energy of the regenerative energy is not the generator but the transmission is used as the inlet, so that the load received by the energy receiving unit can be freely reduced by the transmission rate. For this reason, the blade can be made of a material such as cloth in an extreme case, and can be designed so that it can be easily rotated even by a slight wind.

(Solution of threshold problem of power generation system)
Conventionally, even if the wind speed at which the blades (wings) turn is reached, the electric power that can be used cannot be obtained unless the rotation speed until the motor of the generator generates power is reached. In contrast, in the present invention, the kinetic energy of the regenerative energy is accumulated as elastic energy of an elastic body deformed by a cam or the like that rotates and rotates a rotor that is set to rotate only in one direction. Regardless of the size and non-continuity, it is accumulated and the accumulation loss can be reduced.
(Solution of power generation efficiency problem)
In the conventional system, even when the rotational speed at which the generator can generate power is reached by the receiving portion, if the speed is low, the energy is consumed due to the power loss due to the load in the system. On the other hand, in the present invention, the generator operates and generates power in an ideal state while satisfying drive conditions necessary for power generation by the elastic energy generated by the stored elastic body. Therefore, in the present invention, the problem of the threshold value of the power generation system does not occur.
(Solution of power storage performance problems of power storage devices such as batteries due to non-continuity of power generation)
In a conventional system, even if sufficient electric power is generated and stored in a power storage device such as a battery, if there is no wind and power generation is prolonged, the battery spontaneously discharges in the battery. On the other hand, in the present invention, the amount of elastic energy can be increased or stored in parallel by optimizing the timing of storing energy and storing in the battery, so that the problem of spontaneous discharge can be reduced.

As described above, according to the present invention, power generation efficiency can be improved with a relatively simple configuration, and a highly efficient power generation system can be realized at low cost. There is no doubt that this will greatly contribute to the improvement of system performance and to wind power and wave power generation for consumer use.

Furthermore, since the elastic energy storage device of the present invention is provided with a transmission that can reduce the torque received on the regeneration energy receiving device side as necessary, in addition to the combination with the regeneration energy receiving device, human power and crane In combination with external power like a car, it can also be used as a power generator for remote areas and emergency use. In other words, in remote areas such as in the jungle, elastic energy can be stored and generated by combining human power instead of renewable energy. By lifting up and applying elastic energy, stable power generation for a long time can be supplied.
In other words, in the invention described in the present specification, together with the invention described in the claims, the first energy is stored using the first power that is external power, and the first energy is stored using the stored elastic energy. A power generation system including a storage device that generates second power that is larger than power and a power generation device that converts the second power into electric power, and “stores elastic energy using the first power that is external power” , An elastic energy storage device for a power generation system that generates second power that is larger than the first power by using the stored elastic energy and that can be used for power generation.

DESCRIPTION OF SYMBOLS 1 ... Electric power generation system, 2 ... Regenerative energy acceptance apparatus, 3 ... Accumulation apparatus, 4 ... Electric power generation apparatus, 5 ... 1st shaft, 6 ... Transmission, 7 ... 2nd shaft, 30 ... Cam, 31 ... 3rd shaft, 34 DESCRIPTION OF SYMBOLS ... Elastic body, 35 ... Rail, 36 ... Stopper, 37 ... Slider, 38 ... Ring, 133 ... Rack, 134 ... Movable member, 135 ... Sensor, 136 ... Control apparatus, 140 ... Switching mechanism.

Claims

An accumulator that stores elastic energy using the input first power and generates a second power larger than the first power using the stored elastic energy;
A power generator for converting the second power into electric power;
With
The storage device includes an elastic body including an annular body that is configured by a band-shaped member and is elastically deformable in a radial direction, stores elastic energy by elastically deforming the elastic body by the first power, and stores the elastic energy of the elastic body. Converting elastic energy into the second power when releasing elastic deformation;
Power generation system.
The storage device
Rails,
A plurality of the rings arranged in contact with each other along the rails, and
A slider for slidably attaching each ring to the rail;
A stopper that contacts the ring at one end of each of the rings,
Further comprising
Each ring body is elastically deformed by compressing each ring body toward the stopper by the first power or by extending in a direction away from the stopper.
The power generation system according to claim 1.
A receiving device for receiving energy and generating the first power;
A first shaft connecting the receiving device and the storage device;
A second shaft connecting the storage device and the power generation device;
Further comprising
The first power is transmitted to the storage device by a rotational movement of the first shaft,
The second power is transmitted to the power generation device by a rotational motion of the second shaft.
The power generation system according to claim 1 or 2.
A receiving device for receiving energy and generating first power;
An accumulator that stores elastic energy using the first power and generates a second power larger than the first power using the stored elastic energy;
A power generator for converting the second power into electric power;
A first shaft for connecting the receiving device and the storage device, and transmitting the first power generated by the receiving device to the storage device by rotational movement;
A second shaft that connects the storage device and the power generation device, and transmits the second power generated by the storage device to the power generation device by rotational movement;
A transmission provided on the first shaft and configured to change a rotation speed of the first shaft;
With
The storage device includes an elastic body, stores elastic energy by elastically deforming the elastic body by the first power, and converts the elastic energy to the second power when releasing the elastic deformation of the elastic body,
The torque of the first shaft after shifting by the transmission is smaller than the torque of the second shaft required for power generation by the power generation device,
Power generation system.
The storage device
A third shaft;
A cam that rotates about the third shaft;
A first gear train for transmitting the rotational movement of the first shaft to the third shaft;
A second gear train for transmitting the rotational movement of the third shaft to the second shaft;
Further comprising
The cam elastically deforms the elastic body by the rotational movement of the first shaft, the first gear train, and the third shaft by the first power,
The second power for rotating the second shaft is generated by the rotational movement of the cam, the third shaft, and the second gear train accompanying cancellation of elastic deformation of the elastic body.
The power generation system according to claim 4.
The storage device
A rack connected to the elastic body;
A gear train including a first gear connected to the first shaft and a second gear connected to the second shaft, and meshed with the rack;
Further comprising
The first gear is rotated by the first power to move the rack in the first direction and the elastic body is elastically deformed. When the elastic deformation of the elastic body is released, the rack is opposite to the first direction. The second power is generated by moving in the second direction and rotating the second gear.
The power generation system according to claim 4.
The storage device further includes a switching mechanism that switches between a first state in which elastic deformation of the elastic body by the first power is allowed and a second state in which elastic deformation of the elastic body is released.
The power generation system according to any one of claims 1 to 6.
A power generator that stores elastic energy using the input first power, generates second power that is larger than the first power using the stored elastic energy, and converts the second power into electric power. An elastic energy storage device for a power generation system connected to transmit power,
An elastic body including an annular body configured by a belt-shaped member and elastically deformable in the radial direction,
Storing elastic energy by elastically deforming the elastic body with the first power, and converting the elastic energy into the second power when releasing the elastic deformation of the elastic body;
Elastic energy storage device for power generation systems.
Rails,
A plurality of the rings arranged in contact with each other along the rails, and
A slider for slidably attaching each ring to the rail;
A stopper that contacts the ring at one end of each of the rings,
Further comprising
Each ring body is elastically deformed by compressing each ring body toward the stopper by the first power or by extending in a direction away from the stopper.
The elastic energy storage device for a power generation system according to claim 8.
Each of a first shaft that transmits the first power from a receiving device that receives energy and generates the first power, and a second shaft that transmits the second power to the power generation device are connected.
The elastic energy storage device for a power generation system according to claim 8 or 9.
The torque of the first shaft is smaller than the torque of the second shaft required for power generation by the power generation device,
The elastic energy storage device for a power generation system according to claim 10.
A rack connected to the elastic body;
A gear train including a first gear connected to the first shaft and a second gear connected to the second shaft, and meshed with the rack;
Further comprising
The first gear is rotated by the first power to move the rack in the first direction and the elastic body is elastically deformed. When the elastic deformation of the elastic body is released, the rack is opposite to the first direction. The second power is generated by moving in the second direction and rotating the second gear.
The elastic energy storage device for a power generation system according to claim 10 or 11.
A power generator that stores elastic energy using the input first power, generates second power that is larger than the first power using the stored elastic energy, and converts the second power into electric power. An elastic energy storage device for a power generation system connected to transmit power,
Each of a first shaft that transmits the first power from a receiving device that receives energy and generates the first power, and a second shaft that transmits the second power to the power generation device are connected,
An elastic body,
A third shaft;
A cam that rotates about the third shaft;
A first gear train for transmitting the rotational movement of the first shaft to the third shaft;
A second gear train for transmitting the rotational movement of the third shaft to the second shaft;
With
The cam elastically deforms the elastic body by the rotational movement of the first shaft, the first gear train, and the third shaft by the first power,
The second power for rotating the second shaft is generated by the rotational movement of the cam, the third shaft, and the second gear train accompanying cancellation of elastic deformation of the elastic body.
Elastic energy storage device for power generation systems.
A switching mechanism that switches between a first state in which elastic deformation of the elastic body by the first power is allowed and a second state in which elastic deformation of the elastic body is released;
The elastic energy storage device for a power generation system according to any one of claims 8 to 13.